A group of 250 Imams and Muazzins, employed under the Delhi Waqf Board, on Thursday protested outside the residence of former Chief Minister and AAP supremo Arvind Kejriwal to demand the release of their pending salaries for over 1.5 years.The delegation, which was led by President of the All India Imam Association Maulana Sajid Rashidi, demanded immediate action in the issue.